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trace: Add trace file name command-line option

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This patch adds an optional command line switch '-trace' to specify the
filename to write traces to, when qemu starts.
Eg, If compiled with the 'simple' trace backend,
[temp@system]$ qemu -trace FILENAME IMAGE
Allows the binary traces to be written to FILENAME instead of the option
set at config-time.

Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
This commit is contained in:
Prerna Saxena 2010-08-09 11:48:32 +01:00 • committed by Anthony Liguori
parent c5ceb523fa
commit ab6540d55e
3 changed files with 50 additions and 0 deletions
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18
qemu-config.c
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@ -288,6 +288,21 @@ static QemuOptsList qemu_mon_opts = {
},
};
#ifdef CONFIG_SIMPLE_TRACE
static QemuOptsList qemu_trace_opts = {
.name = "trace",
.implied_opt_name = "trace",
.head = QTAILQ_HEAD_INITIALIZER(qemu_trace_opts.head),
.desc = {
{
.name = "file",
.type = QEMU_OPT_STRING,
},
{ /* end if list */ }
},
};
#endif
static QemuOptsList qemu_cpudef_opts = {
.name = "cpudef",
.head = QTAILQ_HEAD_INITIALIZER(qemu_cpudef_opts.head),
@ -346,6 +361,9 @@ static QemuOptsList *vm_config_groups[32] = {
&qemu_global_opts,
&qemu_mon_opts,
&qemu_cpudef_opts,
#ifdef CONFIG_SIMPLE_TRACE
&qemu_trace_opts,
#endif
NULL,
};